changed theme

lib/box_checker.dart

@@ -14,7 +14,13 @@ class BoxChecker extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Flutter Demo',
-      theme: ThemeData(brightness: Brightness.dark),
+      theme: ThemeData.from(colorScheme: ColorScheme.dark()).copyWith(
+        canvasColor: Colors.black,
+        shadowColor: Colors.blueGrey,
+        colorScheme: ColorScheme.fromSwatch(
+          primarySwatch: Colors.blue,
+        ),
+      ),
       themeMode: ThemeMode.dark,
       home: const MainListPage(title: 'BoxChecker'),
     );
@@ -31,13 +37,15 @@ class MainListPage extends StatefulWidget {
 
 class _MainListPageState extends State<MainListPage> {
   int _selectedPage = data.Page.lists.index;
-  List<data.List> lists = [data.List(100, "test")];
+  List<data.List> lists = [];
 
   void _loadData(data.Page listType) async {
     lists.clear();
     var res = await DBHelper.dbHelper.getAllLists(listType);
     setState(() {
-      for (var row in res) lists.add(data.List.fromMap(row));
+      for (var row in res) {
+        lists.add(data.List.fromMap(row));
+      }
     });
   }
 
@@ -62,7 +70,7 @@ class _MainListPageState extends State<MainListPage> {
                 MaterialPageRoute(
                     builder: (context) =>
                         AddForm(type: data.Page.values[_selectedPage])));
-          }, // TODO Implement add button
+          },
           tooltip: 'Add List',
           child: const Icon(Icons.add),
         ),
@@ -72,9 +80,10 @@ class _MainListPageState extends State<MainListPage> {
               return ListTile(
                 title: Text(lists[index].name),
                 subtitle: Text(lists[index].id.toString()),
-              ); // TODO Implement tile rendering
+              );
             }),
         bottomNavigationBar: BottomNavigationBar(
+            elevation: 4,
             currentIndex: _selectedPage,
             onTap: (index) {
               setState(() {